Yamaha YSP-1000 Service Manual page 63

A B C
SCHEMATIC DIAGRAM (DSP 3/3)
1
2
3
4
5
6
7
8
9
10
D E F
0 2.5
3.3
3.2
3.1
2.5 3.3
3.3 1.7
3.2 1.7
1.7
1.7
0.8 1.5
0 1.5
0 1.5
0 1.5
1.7 1.5
0.8 1.5
1.6 1.5
1.6 1.5
2.5 0
3.3
0 2.5
3.3
3.2
3.1
2.5 3.3
3.3 1.7
3.2 1.7
1.7
1.7
0.8 1.5
0 1.5
0 1.5
0 1.5
0 1.5
0.8 1.5
1.6 1.5
1.6 1.5
2.5 0
1.7
0
1.7
1.7
3.3
0
5.1
0
2.5
3.3
3.2
3.1
2.5 3.3
3.3 1.7
3.2 1.7
1.7
1.7
0.8
0
0 1.5
0 1.5
0 1.5
0.8 1.5
1.6 1.5
1.6 1.5
2.5 0
G H I
3.2 3.3
0
3.2 3.2
3.3 3.2
0 3.3
0 3.0
B-2
3.2 0
3.3 3.3
0 3.3
3.3 3.3
0 0
0 3.3
0
0.1 3.3
3.2 0
3.2 0
3.3 MPU 0
3.2 3.2
0 0
0 3.2
3.0 3.2
3.2 0
EEPROM
0 0
0 0
0
3.3 0
0
3.3
DAC
for Woofer
1.7 3.3
1.5 0
1.7 0
1.7 3.1
0
0 3.3
3.3 4.8
2.5 0
0 2.5
5.1 2.5
DAC SW
3.3
0
0
3.1
0
3.3
4.9
0 12.0 8
2
2.5
5.1
2.5 3
5.1 1
0.7 0
5.1
4
0
AMP 0
5
6 11.5
7
11.5
3.3
0.1
3.3
POINT B-2 Pin 13 of IC26
J K L
IC18, 19, 20: YSS930-SZ
DSP
SDBCK
SDWCK
SDI0
SDI1
SDI2
SDI3
SDI4
SDI5
SDI6
SDI7
IC22, 24: WM8728
24bit, 192kHz Stereo DAC
BCKIN
LRCIN
DIN
IC23: S-29630AFJA
CMOS SERIAL EEPROM
DI
CS
SK
IC21: SN74AHC1G08DCKR
2-Input And Gate
IC25: NJM2068MD-TE2
Dual OP-Amp
DSP
# All voltages are measured with a 10MΩ/V DC electronic volt meter.
# Components having special characteristics are marked s and must be replaced
with parts having specifications equal to those originally installed.
# Schematic diagram is subject to change without notice.
M N
YSP-1000
MICROPROCESSOR
INTERFACE
PROGRAM COEFFICIENT ADDRESS
RAM RAM RAM
CONTROL REGISTER 50 bit ✻ 1024 word 16 bit ✻ 1024 word 17 bit ✻ 256 word
CONTROL
SIGNALS
SDO0
SDO1
SDO2
SDO3
32 bit DSP Core
SDO4
SDO5
SDO6
SDO7
DSP INTERNAL
OPERATING CLOCK
CK (30.72~40.96MHz)
EXTERNAL RAM
INTERFACE
PLL
MODE LATI2S SCKDSD SDIDEM MUTEB CSBIWL ZERO
16 20 19 18 17 15 5
VOUTR
8
3
1
2 11 VOUTL
12 VMID
4 10 7 14 13 9 6
MCLK AVDD DVDD VREFP VREFN AGND DGND
CS 1 8 VCC
VCC
Memory array Address
SK 2 7 NC
decoder
GND
DI 3 6 TEST
DO 4 5 GND
Data register Output buffer DO
Mode decode logic
Clock generator
A 1 5 Vcc
B 2
GND 3 4 Y
OUT 1 8 +V
1 CC
–IN 1 2 7 OUT 2
+ – + –
+IN 3 6 –IN
1 2
–V CC 4 5 +IN 2
63